Indicating pointer



P 1941- c. H. H. RODANET 2,255,003

INDICATING POINTER Filed July 12, 1959 .Fieb.

m .L 2 Z h L L $44 I'm/ate? Charles HilaiieHeml Radcmk HMMMEBJQ QfrPatented Sept. 2, 1941 IN DICATING POINTER Charles Hilaire HenriRodanet, Neuilly-sur Seine,

France, assignor to Socit Anonyme: Jaeger- Aviation, Levallois-Perret,Seine, France Application July 12, 1939, Serial No. 283,947 In FranceAuguste, 1938 The present invention has for mainobject a new industrialproduct constituted by an indicating pointer which presents thedistinctive features set forth hereinafter, so as not to hinder thevisibility of the dial near its centre and to be sufiiciently rigidnotwithstanding its lightness.

The indicating pointer according to the invention is constituted by abar of U-shaped cross section the webof which is cut away along eithersid of the centre on suitable lengths, and the branches of which areslightly curved inwardly in the form of a very open V; the centrereceives a barrel having a head, a cylindrical part which passes throughthe web of the bar and a riveting plate, then the rod of the barrel, theconnection between the said cylindrical part and said rod of the barrelbeing ensured by a frustum-shaped recess the edges of which are bentdown to form the riveting; the indicating end part is obtained bycutting out the branches and the web or the bar and the opposite endpart receives a balancing rivet secured in position in the same manneras the barrel. H

The accompanying drawing illustrates, by way of example only, a form ofconstruction of the indicating pointer according to the invention.

Fig. 1 is a view in elevation and axial section.

Fig. 2 is a corresponding plan view.

Fig. 3 is similar to Fig. 1, but on an enlarged scale and with partsbroken away..

Fig. 4 is a section made according IV-IV oi Fig. 3. r

Fig. 5 is a sectional view, on an enlarged scale, of the barrel beforeriveting.

The pointer illustrated is composed of a bar I to line serves thetwofold purpose of partly counterbalancing the greater length and weightof web l over web H, and giving the pointer desirable inertia, ormomentum, in movement, while the rivet I2 completes thecounter-balancing efiect and serves to retain the plate l3 inpredetermined position.

The cut away parts 3 and 4 allow, so to speak, of seeing through thepointer, which allows the central part of the dial to be used whichwould be partly concealed by a solid pointer; moreover the pointer isextremely light, whilst being of suiilcient rigidity. r

The pointer according to the invention is applicable to all measuringinstruments and indicating devices but, more particularly to those thedial of which comprises a plurality of juxtaposed indicating graduationsand which does not cooperate with the recessed pointer according to theinvention, which must pass over them without concealing them.

What I claim as my invention and desire to secure by Letters Patent is:v

1. An indicating pointer for use upon an indicating apparatus includinga unitary bar of substantially U-shaped cross section which is pivotallymounted at a point intermediate the extremities and has upon both sidesof the pivot'ally mounted portion of the bar an open area in the webportion thereof extending limited distanca along said bar toward saidextremities.

2. An indicating pointer according to claim 1,

v having the side edge portions exteriorly concave of U-shaped crosssection, more particularly. visible in'Fig. 4, the branches l of whichare slightly curved in the form of a very openV.

The web l of saidbar is cut away on either side of the centre. 2, asshown at 3 and 4'. The

cut away part 3 on the side of the indicating part 5 isnot so long asthe cut away part 4 on the opposite side, so as to reserve a greatervisible length tor-the indication, which is moreover covered with a'luminescent coating if desired.

The barrel of the pointer comprises (Figs. 3 and 5) a head 6, then acylindrical part 1 (passing through the centre land a riveting plate 8),and finally the rod of the barrel 9. Between the parts 1 and 9 acircularpitting I0 is effected the edges of which, by being bent downwith a tool will serve to form the riveting shown in Figs. 1 and 3. Theriveting plate 8 serves the purpose of stifiening and reinforcing theintermediate portion of the pointer, and gives it a body which willtolerate riveting over the lower edge of cylinder 1 of the pointercenter.

At the end ll opposed to the indicating end 5 is secured a rivet l2,with an inner riveting plate l3, similar to the plate 8. The rivetingplate I3 and extending along the major portion of the length or thepointer past the open areas in the web portion of the same.

' dicating pointer for use upon an indi- Qatm appratus-includingaunitary bar of substantially U-shaped crosssection which is pivotallymounted at'a point" intermediate the extremities and has upon both sidesof the pivotally mounted portion of the bar an open area in the webportion thereof extending limited distances along said bar toward saidextremities, a reinforcement member of limited length located within theoutline and cross sectionalprofileot the intermediate portion 01 saidbar, and a pivot head or barrel having a lower portion passing throughsaid intermediate portion and said reintorcement member to serve as thepivotal mounting for the pointer, said lower portion or the barrelhaving an edge portion bent over to retain said reiniorcement memberassembled with said bar.

4. An indicating pointer according to claim 3, having a rivet meanssecured to the web portion toward one extremity of. the bar while saidbar is cut at the other extremity to form the indicating end 01 saidpointer.

CHARLES IHLAIRE HENRI RODANE'I'.

